Question: Who was married to Nikolay Gumilev and why did it end?
Paraphrase: Who was hitched to Nikolay Gumilev and why did it end?
SPARQL (Wikidata): SELECT ?value1 ?obj WHERE { wd:Q311033 p:P26 ?s . ?s ps:P26 ?obj . ?s pq:P1534 ?value1 . }